Heating and air conditioning apparatus



July 9,- 1940. R. E. DALY ET AL HEATING AND AIR CONDITIONING APPARATUS 2 Sh ets-Sheet 1 Filed Oct. 19, 1938 flllllllllllllllllllllllIlllllllll INVE 0 7- 552 4G0 I iKMATT 0R5 0 447 /V 60556 I NEY' uly 9 1 40. R. E. DALY ET AL 2 207,052

Patented July 9, 1940 UNITED STATES HEATING AND AIR CONDITIONING APPARATUS Robert E. Daly, Bronxville, and Bernard Goerg,

Scarsdale, N. -Y., assignors, by mesne assignments, to American Radiator &' Standard Sanitary Corporation, New York, N.-Y.,

poration of Delaware Application October 19,

11 Claims.

Our invention relates to apparatus for supplying both heat and humidity to the air in room spaces and also for supplying hot tap water for domestic use, the present application being a division of our copending application, Serial No. 173,760, filed November 10, 1937. An object of our invention is to provide apparatus of the above type which is simple and inexpensive in construction and which operates in an improved and efiicient manner. I

r A further object is to provide a unitary attachment for use with domestic boilers of standard design, which functions to supply humidity in suflicient quantities to the air in the rooms already heated by such boilers. Y

A still further object is to provide a unitary attachment for standard household boilers which functions both to suppply humidity to the air in the rooms and to supply hot water for domestic use.

The invention consists in ,the novel construction and combination of parts, to be more fully described hereinafter, and the novelty of which will be particularly pointed out and distinctly claimed.

In the accompanying drawings, to be taken as a part of this specification, we have fully and clearly illustrated a preferred embodiment of our invention, in which Fig. 1 is a fragmentary vertical section through a part of the basement and groundvfloor of a conventional house and showing in elevation our improved apparatus for air conditioning the house and for supplying hot water for domestic use;

Fig. 2 is an enlarged fragmentary vertical section through a boiler and enclosing jacket therefor and showing our improved humidifying and water heating device more in detail; and

Fig. 3 is a horizontal or plan section taken on the line 33 of Fig. 2.

Referring now in detail to thegconstruction illustrated. it will be noted that we have shown our invention as installed within a building which may be of any desired type; for example, the conventional dwelling house. We have shown two rooms Ill and H of the building and a basement space l2 beneath the rooms.

We have shown a heating system for the rooms and H which comprises a boiler l3 of conventional design located with the basement space [2, and radiators It and I5 located within the rooms Hi and H, respectively, and connected to the 1 boiler by supply and return pipes l5 and I'l. Any desired heating fluid may be used to transmit the heat generated in the boiler l3 to the radiators Ill and II; for example, hot water or Steam. We have also shown outlet boxes [9 and located within the walls of the rooms for supplying 1938, Serial No. 235,738 V (01237-49) humidified air thereto, in a manner which will I tem for supplying domestic hot water to the bathroom, lavatories, etc. (not shown) usually located within the building. A hot water supply pipe 23 leads from the tank 22 and is adapted to be connected in the well known'manner to the usual hot Water taps (not shown). The usual cold water supply pipe for the hot water system is indicated at 24. 1 In accordance with the present invention, we also provide a combined heat-exchange and humidifying device 25 which is constructed as a separate unit and is detachably secured to the boiler 13. The unitary device 25 functions to supply humidified air to the rooms It! and II through the outlet boxes I9 and 2t, and also functions to heat the water for the domestic hot water supply 'systemi The device 25 is so constructed that it utilizes the heat of the fluid in the boiler l3, but to heat the domestic hot water and also to temper the humidified air before it is introduced into the rooms through the outlet boxes. The device 25 is operatively connected to the hot water storage tank 22 by circulating pipes 21 and 23 and the humidified air outlet thereof is connected to the outlet boxes l9 and 20 by ducts 29 and 30, respectively.

In so far as the broaderaspects of our invention are concerned, the unitary device 25 may be connected to'any standard type of boiler having a service opening'in a wall thereof communicating with the space therein containing the heating fluid. In the drawings, we have shown a boiler of the vertical sectional type having an opening 32 in the rear vertical wall 33 thereof in communication with the Water space 34. The unitary device 25 closes the opening 32 and is detachably secured to the wall 33 by suitablescrews 36 (see Figs. 2 and 3). The entire boiler l3 and unitary device 25 is preferably enclosed by a jacket 31 of pleasing appearance, and the latter is so constructed that it provides with the rear wall 33 an enclosed space 38 for housing the unit 25. v g

The details of construction of the unitary device 25 are shown more clearly in Figs. 2 and 3.

which the boiler water from the space 34 circulates.

The device also comprises a hot water heating coil 48 including end pipe connections 49 and 5B, which extend through and are secured to the wall 42 of the casting 4i] and thereby serve to support the coil 38 partially within the chamber 46 and partially in the water space of the boiler. The ends of the connections 49 and 5B are firmly secured to the outer wall 42 by means of clamping nuts 5|. Thus, the coil 48 is carried by the casting 4G and is insertable and removable therewith as a unit. The end connections 49 and 58 are connected respectively to the ends of the water circulating pipes 27 and 28 which, as previously described, form a part of the domestic hot water supply system.

The unitary device 25 also comprises an enclosing casing structure 53 secured by screws 52 to the casting wall 32. The casing 53 comprises a top wall 54, bottom wall 55 and side walls 5% and 5?, and end walls 58 and 59. The casing 53 and casting 6E3 are so constructed that when they are assembled, the end wall 59 of the casing is spaced from a recessed portion 50 of the wall 2 and defines therewith an open-ended passage #3! for the flow of air. The interior of the casing structure 53 is provided with a horizontal partition 62 which divides the casing into an upper chamber 63, housing a blower lid and the usual electrical control devices, and a lower chamber 65 for humidifying the air flowing therethrough- The inlet of the blower 541 is connected to one end of an inlet duct 6'1 which extends through an opening in the wall 58 and communicates at itsouter end with an air supply casing 68, an opening 69 in the jacket 37 providing the connection between the duct 61 and the casing 68. The air supply casing structure 68 is-arranged Within the basement space and may be provided with a suitable filter Ill for extracting foreign particles from the basement air flowing thereinto and into the inlet of the blower. If desired, a connection may be provided between the casing 53 and the outside atmosphere for fresh air supply, or the casing 68 may be connected to the room for recirculated air supply. The outlet of the blower is indicated at H and communicates through an opening in the partition wall $2 with the humidifying chamber 65. The end wall 59 is provided with an opening 12 which serves as an outlet for the humidifying chamber and as an inlet for the passage 6 l.

The end wall 53 is provided at its upper end with an opening '53 which serves as an outlet for the passage 59, and short vertical and horizontal partition walls 'e'd and 15, respectively, provide an outlet manifold 15 through which the humidified air flows from the passage 6| to the lower ends of the ducts 25 and Eli, which, as stated above, are connected at their upper ends to-the outlet boxes l9 and 28, respectively, in the rooms.

7 Arranged within the humidifying chamber 55 is a means for adding moisture to the air flowing therethrough. In so far as the broader aspects of our invention are concerned, this means may be of any suitable construction and operation. In the preferred embodiment shown, we have indicated this means as comprising a Water spray device '58, comprising a nozzle 19 and a target 88 carried by the outer end of a 5! which is secured at its inner end to the nozzle casing 82. The nozzle ejects a fine stream of water toward the center of the target 89 which breaks up the stream in the form of a fog 0r rod mist, as is well known. The rod 8! may be adjusted lengthwise to vary the distance be,- tween the target 86 and the nozzle 1G and thereby regulate the fineness of the spray. The water spray device i8 is secured to -a detachable plate 85 forming a part of the end wall 58 of the casing and is connected by a pipe 85 to a suitable source of water supply. We prefer that the pipe 85 be connected to the circulating pipe 28 of the hot water supply system so that the spray water will be hot and thereby increase the humidifying capacity of the spray.

Connected in the pipe 35 is a solenoid valve 86 and strainer 8's and forming a part of the pipe 85 is a coil sectionllfi. The strainer Bl serves to remove foreign particles from the water flowing to the spray which might clog the spray. The solenoid valve 86 may be connected into a suitable control system and operate to turn on and oil" the spray with the turning on and off of the oil burner (not shown) which fires the boiler l3, or if desired, the valve 86 may be operated in response to a humidity responsive instrument (not shown). The coil 85 permits the plate 3d and spray device 18 to be readily removed for cleaning and adjustment without disturbing the connection between the pipe 85 and circulating pipe 28.

The interior surfaces of the casting wall 42 are preferably formed with heat absorbing fins 952 which are arranged parallel with one another and extend in the general direction of flow of the boiler water through the chamber 45. Also, we provide on the exterior surface of the wall 42, a plurality of fins 9! formed integral with the wall and arranged parallel to one another and extending in the direction of flow of air through the passage 6!. The fins Eli) are preferably arranged opposite the fins 9!. The fins 98 and Si aid materially in the transfer of the heat from the boiler water to the air in the passage *Sl With the spray device 18 and the blower 64 operating, the humidifying chamber 55 is completely filled with a finely divided mist or fog from the spray nozzle 19, and the air flowing through the chamber from the blower will be practically saturated, and, in addition, will entrain therein a portion of the unabsorbed fog or mist. The stream of humidified air with the unabsorbed mist entrained therein fiows into the passage 6! which is being constantly heated by the finned outer surface of the defining wall 42. As the stream becomes heated by contact with the wall 42, unabsorbed entrained particles of moisture will evaporate or become absorbed and the stream will be tempered and superheated. The humidified and heated air flows from the passage into the manifold 16 and then into the room through the ducts 29 and 39 and outlet boxes l9 and 25. The superheating or temp-ering of the air after humidification serves to prevent condensation of moisture in the ducts 29 and 3!! and permits the introduction of the hu midified air into the room spaces without discomfort to the occupants. Any water not evaporated in the chamber 55 and not absorbed by the air as it passes through the passage 5| drains down into a pocket 94 formed in the lower part of the wall 42 of the casting 48. A suitable drain pipe 95 is connected to the pocket 95 and serves to conduct away this excess water to any suitable point of disposal.

From the above, it will be appreciated that we have provided a simple, compact and inexpensive hotwater to the hot water taps for personal use. It will also be observed that an important part of this inexpensive structure is the unitary device 25 which operates both as a built-in hot water heater and also as a humidifying and tempering means for humidified air. In prior art systems for supplying humidified air, there is usually provided a separate tempering coil at the down stream side of the humidifier. In the prior art hot water heating systems there is usually provided a separate heat-exchanger for heating the hot water. The usual separate tempering coil and the separate heatexchanger have been eliminated in the present apparatus, as we provide a single unitary device for performing these two functions. Considered in one sense, it

may be said that we utilize the heat which is normally lost to the atmosphere in the built-in type of hot water heaters of the prior art to perform the function of tempering and superheating the humidified air. 7

In another sense, it may be considered that we have provided a single unitary attachment which may be readily installed in a standard boiler having a service opening and which attachment functions both as a domestic hot water heating device and as a means for supplying tempered and humidified air to the rooms. The wall 42 of the casting serves as a support for both the hot water coil 48 and the casing 53. The boiler water circulating through the chamber 46 defined in part by the wall 42, heats the water in the coil 48 and also tempers and superheats the humidified air flowing through the passage 6| also defined in part by the wall 42.

What we claim and desire to secure by Letters Patent of the United States is:

1. The combination with a boiler having a space containing a fluid for heating rooms and an opening in a wall thereof communicating with said space, of a unitary attachment for said boiler operable to supply hot water for domestic use and to supply humidified air for comfort of the occupants of said rooms and comprising wall means detachably secured to said boiler and closing said opening in the boiler wall with its inner surface in contact with the boiler heating fluid; a coil for heating domestic hot water carried by said wall means and immersed in the boiler heating fluid; a casing structure carried by said wall means and inculding a wall arranged in spaced relation with the exterior surface of said wall means to define therebetween an open-ended air passage; said casing also including walls defining a chamber communicating with one end of said passage; air-humidifying means in said chamber; a blower providing for the flow of air first through said chamber and then through said passage; and conduit means connecting the discharge end of said passage with said rooms.

2. The combination with a boiler having a space containing a fluid for heating rooms and an opening in a wall thereof communicating with said space, of a unitary attachment for said boiler operable to supply hot water for domestic use and to supply humidified air for comfort of the occupants of said rooms and comprising wall means detachably secured to said boiler and closing said opening in the boiler wall with its inner surface in contact with the boiler heating fluid; a coil for heating domestic hot water carried by said wall means and immersed in the boiler heating fluid; a casing structure carried by said wall means and including a wall arranged in spaced relation with the exterior surface of said wall meansto define therebetween an openended air passage; 'said casing also including walls defining a blower chamber and walls defining a humidifying chamber connected at one side to said blower chamber and at its other side to one end of said air passage; a water spray device in said humidifying chamber; a blower in said blower chamber and providing for the flow of air through said humidifying chamber and then through said passage; and conduitmeans.

connecting the discharge end of said pasasge with v said rooms.

3. In apparatus of the character described, the combination of a system for supplying heat to room spaces and including a boiler containing a heating fluid; a hot water supply system, a heat-exchange devicesecured to said boiler and comprising walls defining a chamber having an open side communicating directly with the interior of the boiler so that saidheating fluid circulates through said chamber, and a tubular heat-exchanger arranged within said chamber and having pipe connections extending through a defining wall of said chamber andeconnected to said hot water system; a wall spaced from the exterior surfaceof a defining wall of said chamher to provide, an air passage therebetween; a

humidifying chamber having an outlet connected to one end of said passage; .a conduit means connecting the other end of said passage with the room spaces; and means providing for the flow of air serially through said humidifying chamber, said passage, and said conduit means.

4. In apparatus of the character described, the combintion of a system for supplying heat to room spaces and including a boiler containing a heating fluid and having an opening in a wall thereof communicating directly with the interior thereof; wallgmeans detachably secured to said boiler forclosing said opening and having its interior surfaces contacted by said heating fluid;

a hot water supply system; a hot water heating coil carried by said wall means and having its exterior surface contacting with said heating fluid; a wall spaced from the exterior surface of said wall means and defining therewith a passage for air; a humidifying chamber having an outlet for humidified air connecting with one end ,of said passage; conduit means connecting the other end of said passage with said room spaces; and

means providing for the flow of air serially through said humidifying chamber, said passage, and said conduit-means.

5. In apparatus of the character described, the combination-of a system for supplying heat to room spaces and including a boiler containing a heating fluid and having an opening in a vertical side portion thereof and communicating directly with the space containing said heating fluid;

means including a vertical wall detachably seone end of said passage; conduit means connecting the other end of said passage with said room spaces; and means providing for the flow of air serially through said humidifying chamber, said passage, and said conduit means.

6. In apparatus of the character described, the combination of a system for supplying heat to room spaces and including a boiler containing a heating fiuid and having an opening in a vertical side portion thereof and communicating directly with the space containing said heating fluid; means including a vertical wall detachably secured to the boiler for closing said opening; heat-absorbing fins on the interior surface of said vertical wall and contacting with said heating fluid; heat dissipating fins on the exterior surface of said vertical wall; a hot water supplysystern; a tubular heat-exchanger arranged with its exterior surface in contact with said heating fluid and having inlet and outlet conduit connections at the ends thereof extending through said vertical wall for supporting said heat-exchanger thereby, said conduit connections being connected to said hot water supply system; a wall spaced from the exterior surface of said vertical wall and defining therewith a passage for air; a humidifying chamber having an outlet for humidified air connected to one end of said passage; conduit means connecting the other end of said passage with said room spaces; and means providing for the flow of air serially through said humidifying chamber, said passage, and said conduit means.

7. In apparatus of the character described, the combination of a heating system for room spaces comprising a boiler containing a heating fluid and having an opening therein; a jacket enclosing at least a part of said boiler and spaced from that part of the boiler containing the opening to provide an enclosed space outside of the boiler walls;

wall means within said space and detachably secured to said boiler for closing said opening and having its interior surface contacted by said heating fluid; a casing structure within said space and detachably secured to the outside of said Wall means and including a wall spaced from the exterior surface of said wall means to define therewith a passage for air; air humidifying means within said casing structure and having an outlet connected to one end of said passage; conduit means connecting the other end of said passage with said room spaces; and means providing for the flow of air through said humidifying chamber, said passage, and said conduit means.

8. In apparatus of the character described, the combination of a heating system for room spaces comprising a boiler containing a heating fluid and having an opening therein; a jacket enclosing at least a part of said boiler and spaced from that part of the boiler containing the opening to provide an enclosed space outside of the boiler walls; wall means Within said space and detachably secured to said boiler for closing said opening and having its interior surface contacted by said heating fluid; a casing structure within said space and detachably secured to the outside of said wall means and including a wall spaced from the exterior surface of said wall means to define therewith a passage for air open at its ends; said casing structure including walls defining a chamber having an inlet opening and having an outlet opening communicating with one end of said passage; a water atomizing device 7 in said chamber; conduit means connecting the other end of said passage with said room spaces; and a motor-driven blower within said space and having an outlet connected to the inlet of said chamber.

9. In apparatus of the character described, the combination of a heating system for room spaces comprising a boiler containing a heating fluid and having an opening therein; a jacket enclosing at least a part of said boiler and spaced from that part of the boiler containing the opening to provide an enclosed space outside of the boiler walls; Wall ineanswithin said space and detachably secured to said boiler for closing said opening and having its interior surface contacted by said heating fluid; a tubular heat-exchanger carried by said wall means and arranged with its exterior surface in contact with said heating fluid; a hot water supply system connected to said tubular heat-exchanger; a casing structure within said space and detachably secured to the outside of said wall means and including a wall spaced from the exterior surface of said wall means to define therewith a passage for air open at its ends; air humidiiying means within said casing structure and having an outlet connected to one end of said passage; conduit means connecting the other end of said passage with said room spaces; and means providing for the flow of air through said humidifying chamber, said passage, and said conduit means.

10. The combination with a boiler having a space containing a fluid for heating room spaces and having an opening in a wall thereof communicating with said space, of a humidifier attachment for said boiler comprising wall means closing said opening and detachably secured to said boiler wall with the inner surface of said wall means being in contact with the boiler heating fluid; a casing carried by said wall means and including a wall spaced from the exterior surface of i said wall means to provide therebetween an openended air passage, and walls defining an airhumidifying chamber communicating with one end of said air passage; a blower providing for the flow of air firstthrough said humidifying chamber and then through said passage; and conduit means connecting the discharge end of said passage with the rooms.

11. The combinationwith a boiler having a space containing a fluid for heating room spaces and having an opening in awall thereof communicating with said space, of a humidifier attachment for said boiler comprising wall means closing said opening and detachably secured to said boiler wall with the inner surface of said wall means being in contact with the boiler heating fluid; a casing carried by said wall means and including a wall spaced from the exterior surface of said wall means to provide therebetween an open-ended air passage, walls defining an airhurnidifying chamber communicating with one end of said passage, and walls defining a blower chamber communicating with said air-humidfying chamber; a blower in said blower chamber and providing for the flow of air first through said humidifying chamber and then through said passage; and conduit means connecting the discharge end of said passage with said rooms.

ROBERT E. DALY. BERNARD GOERG. 

